/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */

package org.apache.airavata.metcat.dispatcher;

import java.util.LinkedList;

import org.w3c.dom.Document;

public class DispatchQueue {
	private LinkedList<Document> queue;
	public static DispatchQueue instance;
	
	private DispatchQueue() {
		queue = new LinkedList<Document>(); 
	}
	
	public void addMsgToQueue(Document doc){
		queue.add(doc);
	}
	
	public Document getMsgFromQueue(){
		return queue.pollFirst();
	}
	
	public static DispatchQueue getInstance(){
		if(instance == null ){
			instance = new DispatchQueue();
		}
		return instance;
	}

}
